Shanghai ENJUE Machinery Equipment Co., Ltd is one of the most experienced manufacturers and suppliers of Mechanical Clamshell Dredging Grab in China. If you're going to buy custom Mechanical Clamshell Dredging Grab made in China, welcome to get more information from our factory. For price consultation, contact us.
The mechanical clamshell dredging grab is an efficient underwater tool engineered to handle a wide range of materials, including silt, stiff clay, iron ore sand, and blasted rock. It combines high productivity, a robust structure, and easy maintenance, delivering reliable performance even in the harshest working conditions. Multiple sealing systems are integrated into the pulley mechanism to prevent sediment and water ingress, extending the service life of core components.
Following years of research and development, we have launched a complete product series with load capacities ranging from 6 to 200 tons. This grab is compatible with single-rope, double-rope, and four-rope cranes, accommodating a variety of equipment configurations.
Core Specifications:
Rated Load: Basic safe working load (SWL) 9.5 tons, maximum lifting capacity 20 tons.
Capacity Design: 3.8 cubic meters, suitable for material density of 1.5–2.5 tons per cubic meter.
Structural Configuration: 650mm pulley diameter, 28mm wire rope (6-times ratio), ensuring high-strength traction.
Lightweight Design: Self-weight 10,000kg, balancing performance and durability.
ENJUE Mechanical Clamshell Dredging Grab - Product Highlights
Efficient Underwater Operation
Engineered specifically for dredging conditions, the ENJUE mechanical clamshell dredging grab is capable of efficiently grabbing a wide variety of loose and compacted materials underwater. Its optimized clamshell geometry and precision-balanced closing mechanism ensure a firm, full-bite grip on materials ranging from soft silt to dense, compacted clay - maximizing payload per cycle and minimizing empty passes. Whether working in harbors, rivers, or industrial basins, the grab maintains consistent cycling speed and digging efficiency, even when visibility is zero and hydraulic alternatives are impractical.
Multiple Sealing Protection
The pulley mechanism adopts a multi-layered sealing system designed to effectively block sediment and water ingress. Each sealing stage - including dust seals, water-resistant lip seals, and protective bearing enclosures - works in combination to keep abrasive particles and moisture away from critical moving parts. This dramatically reduces failure rates, extends maintenance intervals, and lowers total cost of ownership, making the grab a dependable workhorse in continuous underwater duty cycles.
Rugged and Durable Structure
Built with high-strength steel and a reinforced structural design, the ENJUE grab is manufactured to withstand long-term, high-intensity operations. Critical stress points are strengthened with wear-resistant plates and reinforced welding, while the overall frame is engineered to absorb impact loads from blasted rock and heavy ore without deformation. The result is a grab that maintains structural integrity and reliable performance across thousands of working hours, even in the most demanding port and mining environments.
Wide Compatibility
The ENJUE mechanical clamshell dredging grab supports single-rope, double-rope, and four-rope crane configurations, offering flexible adaptation to different port and mining equipment. This multi-rope compatibility means operators can deploy the same grab across various crane types and vessel setups without specialized modifications, simplifying fleet planning, reducing spare-part inventory, and enabling quick changeover between job sites.
Complete Product Series
ENJUE offers a complete mechanical grab series with load capacities ranging from 6 to 200 tons, allowing model selection based on specific working conditions - from small and medium-sized operations to extra-large, heavy-duty projects. Each model in the series shares the same core design philosophy: high-strength construction, reliable sealing, and optimized digging performance. This broad range ensures that whatever the material density, water depth, or crane capacity, there is an ENJUE grab sized and configured to match the task.
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